[PATCH RFC v1 2/2] pinctrl: ocelot: add optional shared reset

[Michael Walle]

On the LAN9668 there is a shared reset line which affects GPIO, SGPIO
and the switch core. Add support for this shared reset line.

Signed-off-by: Michael Walle <michael@xxxxxxxx>
---
 drivers/pinctrl/pinctrl-ocelot.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-ocelot.c b/drivers/pinctrl/pinctrl-ocelot.c
index 35b213de1af8..d78716533393 100644
--- a/drivers/pinctrl/pinctrl-ocelot.c
+++ b/drivers/pinctrl/pinctrl-ocelot.c
@@ -19,6 +19,7 @@
 #include <linux/pinctrl/pinconf-generic.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
+#include <linux/reset.h>
 #include <linux/slab.h>
 
 #include "core.h"
@@ -1906,6 +1907,7 @@ static int ocelot_pinctrl_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct ocelot_pinctrl *info;
+	struct reset_control *reset;
 	struct regmap *pincfg;
 	void __iomem *base;
 	int ret;
@@ -1921,6 +1923,13 @@ static int ocelot_pinctrl_probe(struct platform_device *pdev)
 
 	info->desc = (struct pinctrl_desc *)device_get_match_data(dev);
 
+	reset = devm_reset_control_get_optional_shared(dev, "switch");
+	if (IS_ERR(reset)) {
+		dev_err(dev, "Failed to get reset\n");
+		return PTR_ERR(reset);
+	}
+	reset_control_reset(reset);
+
 	base = devm_ioremap_resource(dev,
 			platform_get_resource(pdev, IORESOURCE_MEM, 0));
 	if (IS_ERR(base))
-- 
2.30.2